not if you have more then one input frequency you wouldn't be doubling.
And allot of the local repeaters here have both a VHF and UHF side which
transmit at the same time, so you could, with a dual band radio, be
transmitting and listening to yourself....and anyone else who wanted to jump
in there...most people that i have heard that use full duplex just have a
secondary radio sitting there that they are monitoring on and can hear when
someone starts talking while they are talking on another input frequency.
I think some repeater owners prevent this type of thing but the controllers
that control repeaters with multiple inputs will allow for more then one
stream of audio at a time going to the transmitter.
Full duplex is possible and is used by several that i know of.
If you wanna hear an example, just check out the 435 live audio
stream...they constantly utilize full duplex both from their telephone input
and their multiple inputs coming from various bands and frequencies.
73
Colin, V A6BKX
----- Original Message -----
From: "Brent Harding" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, June 14, 2005 6:53 PM
Subject: Re: repeaters
> I never heard of the idea of full duplex on repeaters. As far as I know,
> most rigs we use to talk on don't support it either, I know my th-f6a
mutes
> the receiver when you talk, oh, wait a minute, I don't think you could do
> full duplex because both people would be transmitting on the same
frequency
> and doubling.
>
> ----- Original Message -----
> From: "Colin McDonald" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, June 14, 2005 7:38 PM
> Subject: Re: repeaters
>
>
> > a repeater is, just that, a station that takes a signal and repeats that
> > signal on another frequency...usually these repeaters have large
antennas
> > that are mounted high up on towers so that they can receive signals over
a
> > very wide area, and so that they can retransmit those signals over the
> same
> > broad area.
> > If you have a scanner and program in 2 meter amateur frequencies, most
of
> > them will be repeaters which have an input frequency which they listen
and
> > receive on and an output frequency which they transmit the signal out
on.
> > These repeaters systems are commonly used throughout the radio world for
> > communications over a wider area instead of the relatively localized
> ability
> > of simplex for large areas.
> > What is simplex? it is a method of communication where both persons who
> talk
> > back and forth on their radios are transmitting and receiving, not at
the
> > same time, on the same frequency...ultimately, a repeater allows for 2
> > people to talk back and forth the same as you can on a telephone without
> > having to stop transmitting to listen to the other station.
> > However, most repeaters are semi-duplex, this means only one person can
> talk
> > at one time and they must stop transmitting to listen to the other
station
> > transmitting.
> > As i said, the whole point of a repeater is so that one centralized high
> > powered transmitter, and a very very sensative receiver can be put up
with
> a
> > high gain very sensative antenna with allot of height, which will serve
a
> > wide area so that Hams may communicate to other hams relatively long
> > distances away without having to have the large antenna systems and the
> > expensive sensative radio equipment....
> > hope that helps you to understand a bit better.
> >
> > You of course need to be a licensed ham to talk on an amateur repeater.
> > 73
> > Colin, V A6BKX
> > ----- Original Message -----
> > From: "tomi" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Tuesday, June 14, 2005 3:07 PM
> > Subject: repeaters
> >
> >
> > > Hi, I have heard and read about these thingsyou guiseuse called
> repeaters.
> > > How do they work and how can you get on one?
> > >
> > > regards: Tomi
> > >
> >
>
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